Flammability limits of biogenic volatile organic compounds emitted by fire-heated vegetation ( Rosmarinus officinalis ) and their potential link with accelerating forest fires in canyons: A Froude-scaling approach - Archive ouverte HAL
Article Dans Une Revue Journal of Fire Sciences Année : 2014

Flammability limits of biogenic volatile organic compounds emitted by fire-heated vegetation ( Rosmarinus officinalis ) and their potential link with accelerating forest fires in canyons: A Froude-scaling approach

Résumé

The accelerating forest fire phenomenon for two real accidents is studied. This phenomenon is investigated using the thermochemical hypothesis, based on the ignition of a biogenic volatile organic compounds cloud accumulated in canyons. By heating a Rosmarinus officinalis plant in a specific hermetic enclosure, a mixture of 14 biogenic volatile organic compounds is identified and their mass fractions determined as temperature functions. The theoretical flammability limits of those components are calculated by means of empirical correlations. Froude-scaling law is applied to laboratory emission results to find the concentrations of biogenic volatile organic compounds at field scale. The comparison of the flammability limits with the calculated concentrations at real scale using this changing-scale analysis shows that the emitted biogenic volatile organic compounds can lead to an accelerating forest fire.
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Dates et versions

hal-03219895 , version 1 (06-05-2021)

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Citer

Khaled Chetehouna, Léo Courty, Jean Garo, Domingos Viegas, Carlos Fernandez-Pello. Flammability limits of biogenic volatile organic compounds emitted by fire-heated vegetation ( Rosmarinus officinalis ) and their potential link with accelerating forest fires in canyons: A Froude-scaling approach. Journal of Fire Sciences, 2014, 32 (4), pp.316-327. ⟨10.1177/0734904113514810⟩. ⟨hal-03219895⟩
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